/*
 * InspIRCd -- Internet Relay Chat Daemon
 *
 *   Copyright (C) 2013, 2017-2018, 2020 Sadie Powell <sadie@witchery.services>
 *   Copyright (C) 2013, 2015 Attila Molnar <attilamolnar@hush.com>
 *   Copyright (C) 2012 Robby <robby@chatbelgie.be>
 *   Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
 *   Copyright (C) 2009 Uli Schlachter <psychon@inspircd.org>
 *   Copyright (C) 2008, 2010 Craig Edwards <brain@inspircd.org>
 *
 * This file is part of InspIRCd.  InspIRCd is free software: you can
 * redistribute it and/or modify it under the terms of the GNU General Public
 * License as published by the Free Software Foundation, version 2.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */


#include "inspircd.h"
#include "modules/httpd.h"

class ModuleHttpConfig : public Module, public HTTPRequestEventListener
{
	HTTPdAPI API;

 public:
	ModuleHttpConfig()
		: HTTPRequestEventListener(this)
		, API(this)
	{
	}

	ModResult OnHTTPRequest(HTTPRequest& request) CXX11_OVERRIDE
	{
		if (request.GetPath() != "/config")
			return MOD_RES_PASSTHRU;

		ServerInstance->Logs->Log(MODNAME, LOG_DEBUG, "Handling HTTP request for %s", request.GetPath().c_str());
		std::stringstream buffer;

		ConfigDataHash& config = ServerInstance->Config->config_data;
		for (ConfigDataHash::const_iterator citer = config.begin(); citer != config.end(); ++citer)
		{
			// Show the location of the tag in a comment.
			ConfigTag* tag = citer->second;
			buffer << "# " << tag->getTagLocation() << std::endl
				<< '<' << tag->tag << ' ';

			// Print out the tag with all keys aligned vertically.
			const std::string indent(tag->tag.length() + 2, ' ');
			const ConfigItems& items = tag->getItems();
			for (ConfigItems::const_iterator kiter = items.begin(); kiter != items.end(); )
			{
				ConfigItems::const_iterator curr = kiter++;
				buffer << curr->first << "=\"" << ServerConfig::Escape(curr->second) << '"';
				if (kiter != items.end())
					buffer << std::endl << indent;
			}
			buffer << '>' << std::endl << std::endl;
		}

		HTTPDocumentResponse response(this, request, &buffer, 200);
		response.headers.SetHeader("X-Powered-By", MODNAME);
		response.headers.SetHeader("Content-Type", "text/plain");
		API->SendResponse(response);
		return MOD_RES_DENY;
	}

	Version GetVersion() CXX11_OVERRIDE
	{
		return Version("Allows the server configuration to be viewed over HTTP via the /config path.", VF_VENDOR);
	}
};

MODULE_INIT(ModuleHttpConfig)